The correct option is B (ii), (iv), (i), (iii)
∙ A pigment called melanin is present in the cells of the epidermis.
∙ Melanin is synthesised by glands in the skin. The percentage of melanin decides the fairness or darkness of the skin i.e., as the percentage of melanin increases, the darkness of skin increases.
∙ Melanin protects our skin and the inner parts from ultraviolet sun rays.